<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Minesweeper</title>
  <link rel="stylesheet" href="css/style.css" media="defer" onload="this.media='all'">
</head>
<body>
  <div class="board"></div>
  <a href="#!" class="btn">开始游戏</a>
  <div class="endscreen"></div>
  <script defer src="js/script.js"></script>
</body>
</html>
